成矿的

Using eight known specimens of Fenhuangshan copper deposit, and putting its itto the network to learn, after more than 5000 iterativenesses, the network constringed and the error of output reached the requiration of precision.

因此，利用BP人工神经网络模型来拟合成矿作用过程中各种控矿因素之间的藕合作用、并以此建立木区的大比例尺成矿预测模型是可行的。

It is suggested that the area with low denudating degree occurring after postminal stage should be favorable, such as, the area at and close to the edge of Meso-Cenozoic red basins.

有利的找矿地区应为成矿期后剥蚀程度较低的地区，如现存的中生代红盆边缘及邻近地区。

The interlayer oxidized zone and the concentration of uranium has the typical characters of low temperature geochemical processes. Interlayer oxidized zone can be defined from the bedrock to horizon C under hypergene weathering by such parameters as chemical metamorphosing、index of chemical weathering and index of mineral chemical differentiation.(2)Major elements can be divided into sensitive group、 active、 weak active and inert groups according to chemical metamorphosing parameter and fractional migration potential. For major elements of multivalent in the active group( Fe_2O_3、 FeO) and U, the migration and concentration trend in interlayer oxidized zone is apparent.

层间氧化带形成和铀富集成矿是地下水在低温、常压、开放体系、非平衡状态对围岩长期作用结果，元素含量及其有关地球化学参数在氧化带不同亚带中表现出一定的变化和分布规律，除Fe_2O_3、FeO、Fe_2O_3／FeO外其它元素含量及其参数只在统计学上呈现规律性变化，而不具分带意义，具有典型的低温地球化学作用特点；利用风化作用化学蚀变参数PC值、化学风化指数ICA和矿物化学分异指数ICV将层间氧化带作用界定于表生风化作用的基岩到母质层阶段。

More and more field observations and experimental data show that gas plays a certain role in the transport and enrichment of mineralizing elements.

越来越多的野外观测和实验数据表明，气相对成矿元素的迁移和富集具有不可忽视的作用。

Mineralizing structure of typical deposits belongs to eptitectonic of crust.

成矿系列中的典型矿床的构造同属于地壳浅部分的构造层次。

The geochemical characteristics and the strong mineralization of Cu and W of Haoyihada intrusive body prefigured that the potential of ore prospecting and exploration is great in this area.

地球化学的特征以及在该岩体发现的铜钨矿化，预示着该地区将是一个有利的成矿远景区。

On this basis, three favorable ore-forming targets were prognosticated in the external and deep areas of Challenger gold mine, and one of them had been found by the project, achieving good social and economic benefits.

在此基础上，利用该方法在Challenger 金矿区外围及深部进行了找矿预测，发现了3 个有利的成矿靶区，并经工程验证发现1 个金矿体，获得了相应的金储量，取得了良好的社会经济效益。

Gold came from the mantle and/or from remelted crust, while large, deep-cut faults and passageways of the remelted magmas provided possibility of transportation of the hydrothermal fluids, and brittle, brittle-ductile overlapped faults developped at the moderate-shallow levels of the mantle plumes, and related decollements, provided ideal sites for the precipitation of hydrothermai fluids.

金主要来自地幔及重熔地壳，深大断裂及重熔岩浆通道为成矿热液的迁移提供了有利条件，中浅层次的幔枝隆起及外围滑脱带中的脆性、韧—脆性叠加断裂为矿液提供了沉淀场所。

In the paper it is discussed that the conception of epithermal gold depposits and its geodynamics environment of mineralizing, its essence character and classfication of deposits, the problems of epithermal gold deposits research and the tropism in the aftertime.

厘定了浅成热液金矿的概念，阐述了其成矿地球动力学环境、矿床本质特征及矿床的分类，指出了浅成热液金矿研究中存在问题及今后的研究取向。

The study of the gas hydrate stability zone has great significance in comprehension of the distribution features and the resource assessment of gas hydrates.

天然气水合物稳定带的研究对于认识天然气水合物的成矿与分布规律以及资源评价都具有重要的指导意义。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。